Mathematics, 03.05.2021 20:50 acontrevas1010
An earthquake strikes and an isolated area is without food or water. Three crews arrive. One can dispense needed supplies in 60 hours, a second in 30 hours, and a third in 80 hours. How long will take all three crows working together to dispense food and water?
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An earthquake strikes and an isolated area is without food or water. Three crews arrive. One can dis...
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